Paper-bag machine.



No. 69|,795. Patented Jan. 28,]902.

l e. c. NELSON. P

PAPER BAG MACHINE.

(Application led Sept. 4, 1901.)

(No Model.) 4 Sheets-Sheet I.

Patented lan. 28, |902. G. C. NELSON.

PAPER BAG MACHINE. (Application m'ed sept. 4, 1901.)

l4 Sheets-Sheet 2.

(No Model.)

lTME NDRRIS PETERS oo., PHOTO-LITRO., wASHlNuTuN. n. c.

No. 69|',795. Patented 1an. 2s, :902.

(no Model.) 4 sheets-sheet s.

f n. c.. N'ELsoN.

PAPER BAG MAC (Application led Sept. 4, 1

'mi Noam: PETERS ocr.. Wouw., wMmou, n. t:A

Nn. SQL-795. Patented 1an. 28,1902.

a. c. NELSON. v

PPEB'BG MACHINE.

(Application i'lled Sept. 4, 1901.)

4 Shees-Sheet 4.

(No Model.)

vwantof,

THE Nonms PErEns Co.. wom-LINO.. WASHINGTON. D, c

)UNITED STATE-s PATENT OFFICE.

GEORGE C. NELSON, OF CINCINNATI, OHIO.

PAPER-BAG MACHINE.

sPEoiFIoATroN forming pare afnemers Patent No. 691,795, daten January 2s, 1902. Application iiled September 4,1901. Serial No. 74,296. (No model.)

.To @ZZ whom, it may concern:

Be it known that I, GEORGE-C. NELSON, a citizen of the United States of America, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Paper-Bag Machines, of which thefollowing is a speciiication.

The object of ymy invention isa machine for forming square-bottomed bags, such as are the subject of Reissue Letters Patent No. 10,083, from a continuous bellows-sided tube of paper that is fed into the machine, which is simple of construction and effective in operation. This obj ect is attained by the means described in the specification and illustrated in the accompanying drawings, in which- 'Figure 1 is a longitudinal verticalsectional view of a machine embodying my invention, taken upon line roof Fig. 2. Fig. 2 is a plan View of the same. Fig. 3 is a vertical sectional view taken upon line z e', Fig. 2. Fig. 4 is a detail perspective view of one of the fingers which are mounted upon the reciprocating carriage. Fig. 5 is a detail in! verted plan view of the nose which enters and spreads the end of the paper tube in forming the bottom ofthe bag, showing it with the arms, which are pivoted to it, spread out. Fig. 6 is a similar View showing the arms drawn inward. Fig. 7 is a detail front view of the cam for actuating the tuckers. Fig. 8 is a sectional view of the same, taken upon line o o of Fig. 7. Fig. 9 is adetail plan View of a section of paper tubing scored for forming two bags, the forward section being shown in the position just as the nose enters its forward end. 1 Fig. 10 is a similar view showing the wings of the nose spread out in one section and the paste applied to a section in a more advanced stage of the process. i Fig. 11 is a similar view showing one of the folds pasted down. Fig. 12 shows the complete bagfin the form in which it is discharged from the machine. Fig. 13 is a detail longitudinal sectional view of the scoring-blades. Fig. 14 is a detail elevation of one of the longitudinal plates having ways `for engaging the movable plate on the carriage.

I willnow describe the folds that are given to each bag-section in the machine embodylframe which consists of two parallel horizontal angle-bars A A', themselves supported upon standards` a. Mounted upon the forward ends of bars A A are two standards a' a2,be tween which arejournaled two feed-rolls as o4, by which tube B, having sectoral notches Z914 at intervals upon its upper face, is fed forward to rotating cylinders c and d. Cyl-l inder c carries scoring-blades C C', the longitudinal cutting edges c2 c3 of which are at a distance apart equal to the width of notch b, and the transverse cutting edges o4 c5 extend thence outward at Aright angles. vCylinder d carries a plate d', with a raised portion D to come between blades C C', and slots into` which cutting edges o2 c3 c4 c5 enter, edges c4 c5 forming transverse cut b4 in the tube, which,

together with notch b, sever it, except a narrow'strip b5, and'edges c2 c'3 forming longitudinal slits b 197 therein meeting cut- ?94.. From cylinders c and d tube B passes on to a reciprocating carriage" E, which consists of a horizontal plate e, sliding in horizontal ways formed in side bars e e2, supported upon standards e3 e, supported upon bars A A. Plate e has a rack e5 upon its under side to mesh with a toothed segment e6, which is secured 'upon a shaft e7, journaled in side bars e e2 to advance the carriage, which is returned byacoiled spring e8, secured at one of itsends to the forward end of thecarriage and at the other end to the supporting-frame. Segment @Gis of a length such that after one bag-section has been fed under nose F it releases rack e5 for carriage F. t'o take the next bagsection. v

Mounted upon bars e e2V are' vertical longitudinal plates e9 ew. Plate 'e has secured IOO near its forward end two vertical pins having nuts e11 cl2 at their upper ends, between which and coiled springs @13 is carried a horizontal plate e, whose ends projectinto ways @15 e1G in side plates e9 e1, inclined from the front, so that as carriage E is advanced plate e is drawn down towardit to rest upon tube B a certain distance back of one of cross-cuts b4 of the bag-section upon the carriage. At a pointjvust in front of nose F,Where plate e has been lowered an amount sufficient to cause it to bear down upon the bag-section, ways 615 and el become horizontal, as shown in Fig. 1, and extend thence horizontally to the end of plates e2 e10,as shown in dotted lines, Fig. 2.

Upon plate e opposite the rear edge of plate e are likewise secured two vertical plates in which are mounted horizontal tapering fingers e1T @18, whose outer ends are held by springs @19 62 in contact with side plates e9 elo, which have inwardly-projecting edges to push the fingers inward to rest upon plaits b and b2. The front edges 621 of fingers e e18 are straight, and the rear edges @22 form angles therewith.

Secured near the rear end of bars A A' are -two standards g3 g, to which is secured a rigid nose F,which projects forward centrally over the path of carriage E at a distance above it slightly greater than the thickness of plate ci". Nose F is of a width equal to or less than the distance between the plaits upon one side of tube B and those upon the other side and tapers down to the front edgef2, which enters the end of the bag-section, and as the section is carried onward turns the upper half back over plate @14. Strip b5 being held down beneath nose F, edges e22 of the fingers form one side of triangular folds b2 b9.

Upon the under side of nose F, near its forward end,armsf2f4 are pivoted. Situated in a longitudinal recess,likewise upon the under side of said nose,is a sliding rod f5, at the forward end of which are pivoted two links fsf?, the other ends of which are pivoted one to arm f3, the other to arm f4. When rod f5 is pushed forward, arms f3f4 are spread apart, as shown in Fig. 5, and when the rod is drawn backward by spring f2 the arms are drawn together, as shown in Fig. 6. Rod f5 is carried forward by an arm fg, contacting a lug fwon the rod. Arm fl extends down through a central slot in nose F and is jonrnaled at its upper end upon a shaftfu, which is supported by the nose. Arm f has an upwardlyprojecting lugf12, which as carriage E moves forward is contacted by an arm 623, which is secured to plate e, thereby rotating arm f upon its shaft, carrying rod f5 forward, and spreading armsf2 f4, which in spreading complete triangular folds bs b9 and laps Z910 bi1. After arm @23 has passed lug f12 spring f8 draws arms f3f4 inward, and the bag passes on underneathmose F to paste-roll Gr and paste-pad G', which are mounted upon shafts g g', which are journaled in standards gB g4, which are mounted upon bars A A'. Pasteroll G has sectoral ridges g5 g, which apply paste along the inner edges of laps D10 b, and a transverse ridge g?, which applies paste across the outer edge of lap B13.

Tube B passes on from the paste-rolls between rotating cylinders H H', the upper one of which carries a cutter-blade h and the lower one a recess h', into which the blade projects to sever strips b5 after the bag-section has entered between feed-rolls K K', journaled one above the other in standards 7c, which are secured upon the ends of bars A A. Back of roller K' and journaled in standards 7c is a cylindrical roller K2, and beneath roller K' and similarly journaled in standards 7c is another cylindrical roller K2. Rollers K2 and K3 revolve in a direction opposite to the rotation of roller K', as indicated by arrows in Fig. 1. Above rollers K' K2is a tucker-bladeL,which is mounted in slots k2 in standards 7c, beyond which the ends of the blades are bent down into vertical arms Z l', which at their ends have pins Z2 Z2,which project into cam-shaped slots fm upon the exterior faces of disks M M', which are mounted upon the opposite endsof the shaft of roller K'. Beneath roller K2 is a second tucker-blade N, which is mounted in slots 7a2 in standards 7.1, beyond which blade N is likewise bent in arms fa n', which pass upon the inside of disks M M' and have outwardly-projecting pins n2 n2 to tit into camshaped slots a4 in the cams.

The bag-section after passing between rollers K K' has one end resting on roller K2, tucker-blade L being raised. Said blade descending strikes the bag-section at the base of lap Z912, bends it over, and feeds it thus bent `between rollers K' and K2, which paste the lap down, and whence it passes down to a point opposite roller K2, tucker-blade N being withdrawn. When blade N advances, it bends the entire bag over along the base of lap Z313 and feeds it between rollers K' and K3,which paste down lap Z913, and whence the completed bag dropsout.

l. In a machine for forming square-bottomed bags from bellows-sided tubes, the combination of a reciprocating carriage means for feeding the tube upon the carriage, a plate upon the carriage to descend upon the tube at a distance from its end, lingers upon the carriage to rest upon the lower plaits of the bellows between said plate and the end of the tube, a rigid nose to enter the end of the tube to turn its upper part back as the carriage advances to form the laps and the triangular folds, substantially as shown and described.

2. ln a machine for forming square-bot tomed bags from bellows-sided tubes,tl1e combination of a reciprocating carriage means for feeding the tube upon the carriage, a plate upon the carriage to descend upon the tube at a distance from its end, fingers upon the carriage to rest upon the lower plaits of the bellows between said plate and the end of the tube, a rigid nose to enter the end of the tube,

IOO

TIO

arms pivoted to the end of the nose upon its under side, means for reti-acting the arms when the nose enters the end of the tube, and means for spreading them t0 assist in forming the triangular folds and laps, and in retracting them as the tube passes onward beneath the nose, substantially as shown and described.

3. In a machine for forming square-bottomed bags from bellows-sided tubes the comlbination of rigid side bars having ways formed therein, a reciprocating carriage sliding in said ways, pins mounted upon the carriage a plate upon the pins, iingers mounted upon the sides of the carriage, plates upon the side bars having both inclined slots into which the ends of the plate upon the carriage project to carry it down upon the tube and inward projections to abut against the fingers to carry them over the lower plaits of the bellows, a nose fixed upon the side bars centrally over the carriage to enter the end of the tube and turn the upper side thereof back over the plate and lingers to form therein the triangular vfolds and laps, substantially as shown and described.

4. In a machine for forming square -bottomed bags from bellows-sided tubes the combination of rigid side bars having ways formed therein, a reciprocating carriage sliding in said Ways, pins mounted upon the carriage, a- 3o plate upon the pins, lingers mounted upon the sides of the carriage, plates upon the side bars having both inclined slots into which the ends of the plate upon the carriage project tocarry it down upon the tube and inward projections 3 5 to abut against the fingers to carry them over the lower plaits of the bellows, a nose fixed upon the side bars centrally over the carriage, arms pivoted upon the under side of the nose,

a lever fulcrumed in the nose for spreading 4o the arms, and an arm upon the carriage for contacting the lever to actuate it to spread the arms after the nose has entered the end l of the tube to assist in forming the triangular N folds and laps therein, substantially as shown 45 and described.

GEORGE C. NELSON.

Witnesses:

W. F. MURRAY, GEO. J. MURRAY. 

